How anti-virus software work
Antivirus software is an application that scans all files on your computer, it will then identify all the programs they believe to be suspicious, and mark them for deletion. Antivirus Software does not check for viruses on your computer normally, when you create, open, close, or e-mail files. This allows the software to detect viruses as soon as possible. Virus scans can be set to run on a regular basis, at the same time each day.
A good anti-virus program to use a couple of methods to detect security threats. One way is to check the files, if one of them is responsible for known viruses in its database. Another is to see if abnormal operation occurs when a file is executed, which may be a virus.
Since anti-virus software makes heavy use of their anti-virus database is critical to your anti-virus software is up-to-date virus definitions. New viruses are created daily in the hope that users with outdated virus definitions do not recognize the threat, and it sneaks past the defenses.
When you run a virus scan, you will tell your anti-virus tool to check every file on your computer, or you can choose from a number of stations. Security software then checks the code files from a computer database for any matches. If a match is found in anti-virus program to delete a file, put it in quarantine or repair the file by removing the malicious code.
Some anti-virus software, you can specify special actions when a suspicious file is found. If the quarantined files are isolated so that other programs can not access the file, and this prevents the virus from spreading.
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